Fix a number of Typescript issues (#31877)

Typescript error count is reduced from 633 to 540 with this. No runtime
changes except in test code.

1 files changed, 5 insertions, 4 deletions

diff --git a/web_src/js/htmx.ts b/web_src/js/htmx.ts
index bfc2147736..d4f317ee5a 100644
--- a/web_src/js/htmx.ts
+++ b/web_src/js/htmx.ts
@@ -1,20 +1,21 @@
 import {showErrorToast} from './modules/toast.ts';
+import 'idiomorph/dist/idiomorph-ext.js'; // https://github.com/bigskysoftware/idiomorph#htmx
+import type {HtmxResponseInfo} from 'htmx.org';
 
-// https://github.com/bigskysoftware/idiomorph#htmx
-import 'idiomorph/dist/idiomorph-ext.js';
+type HtmxEvent = Event & {detail: HtmxResponseInfo};
 
 // https://htmx.org/reference/#config
 window.htmx.config.requestClass = 'is-loading';
 window.htmx.config.scrollIntoViewOnBoost = false;
 
 // https://htmx.org/events/#htmx:sendError
-document.body.addEventListener('htmx:sendError', (event) => {
+document.body.addEventListener('htmx:sendError', (event: HtmxEvent) => {
   // TODO: add translations
   showErrorToast(`Network error when calling ${event.detail.requestConfig.path}`);
 });
 
 // https://htmx.org/events/#htmx:responseError
-document.body.addEventListener('htmx:responseError', (event) => {
+document.body.addEventListener('htmx:responseError', (event: HtmxEvent) => {
   // TODO: add translations
   showErrorToast(`Error ${event.detail.xhr.status} when calling ${event.detail.requestConfig.path}`);
 });